Originally Posted by kcaskey03
I have a question on how to correctly diagnosis an abnormal TSH level. EX: we order a GHP and if the TSH comes back abnormal we then order a Free T4 , what would we use for the Free T-4 (the patient does not have hyper or hypo thyroidism or the GHP dx would not qualify for the Free T4 dx ) . I've been looking at 790.99 or V77.0 ; I've read other posts that were related this question and they suggested 790.6 saying its part of a blood chemistry-which i think is incorrect because the ICD 9 book states the blood chemistry levels, and 794.5 / 794.6 is for function studies. Can I get other peoples' input? Thank you very much in advance!
I agree with 790.99, if the second test comes back 'inconclusive' or 'normal' - don't use a V-code - it will deny for medical necessity. It's a problem, so it should have a problem-oriented diagnosis associated with it. I also agree with you on not using 794.5/794.6 - those are specifically for function studies, and this doesn't really fit.
If the second test comes back abnormal again, I'd suggest looking at 259.9.